Carton box and blank therefor



March 18, 1969 K. R. PERSSON CARTON BOX AND BLANK THEREFOR Sheet 1 of5Filed April 14. 1966 INVENTOR. Kual Rune Peasson BY: m I,

ha WM March 18, 1969 K. R. PERSSON CARTON BOX AND BLANK THEREFOR Sheet Zof 5 Filed April 14. 1966 K. R. PERSSON CARTON BOX AND BLANK THEREFORMarch 18, 1969 3 hrs Sheet Filed April 14. 1966 INVENTOR. \(MJ RunePenssm my $15 m g March 18, 1969 K. R. PERSSON 3,433,402

CARTON BOX AND BLANK THEREFOR Filed April 14. 1966 Sheet 4 of 5 FIG- 6INVENTOR. Kai" Run: Easson BY mmy Mummy March 18, 1969 K. R. PERSSON3,433,402

CARTON BOX AND BLANK THEREFOR Filed April 14, 1966 Sheet 5 of 5 FIG. 7

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mummy United States Patent 3,433,402 CARTON BOX AND BLANK THEREFOR KarlRune Persson, Halmstad, Sweden, assignor to Sprinter-Pack AB, Halmstad,Sweden Filed Apr. 14, 1966, Ser. No. 542,504 Claims priority,application Sweden, Apr. 23, 1965,

5,346/ 65 US. Cl. 229-33 2 Claims Int. Cl. B65d /22, 5/02, 5/66 ABSTRACTOF THE DISCLOSURE The present invention relates to carton boxes erectedfrom a single blank and comprising a bottom tray and a lid tray fittingover the side walls of the bottom tray. The lid tray is hingedlyconnected to one of the side walls of the bottom tray by means of ahinge panel which is secured in a position on the outer side of the sideof the bottom tray. The lower edge of the hinge panel forms a hingedconnection with the lower edge of the adjacent side of the lid tray. Theheight of the hinge panel may be equal to the height of the box but ispreferably about half or less of the height of the box in order to savematerial and to enable an easy opening of the box.

The general object of the invention is to provide a blank of thecharacter referred to which is well adapted to be erected in an erectingmachine to form a carton box in which the hinge panel is effectivelylocked in a simple manner.

These and other objects of the invention and the manner in which theyare attained according to the invention will be described more in detailwith reference to the accompanying drawings showing some embodiments ofthe invention by way of example.

FIG. 1 shows half of a blank according to the invention for erecting abox shown in FIG. 4. FIG. 2 is a diagrammatic perspective view of thebox in an intermediate position upon its erection. FIG. 3 is adiagrammatic perspective view of a succeeding intermediate position uponthe erection of the box, some portions of the box being broken away forthe sake of clarity. FIG. 4 is a partial perspective view of the boxwhen erected and with the lid tray somewhat raised from its closedposition. FIG. 5 is a perspective view of the box when closed. FIG. 6shows a modified blank for erecting a box according to the invention,and FIG. 7 shows still another blank slightly modified in relation tothe blank shown in FIGS. 1 and 6.

For the sake of simplicity and to allow illustration on a greater scaleFIG. 1 shows one half only of the blank because the other half isidentically shaped. In a manner known per se the bottom tray of the boxis formed by a bottom panel 1 and four associated side walls 2, 3, 4 and5. The side walls 2, 3 have extensions at their ends in the form of endflaps 6. The side walls 4, 5 have extensions at their upper edges in theform of wing flaps 7 to be folded over the end flaps 6 about fold lines8. Thereafter, the wing flaps are locked by gluing to the inside of theend walls 4-5.

Similar to the bottom tray, the lid of the box is formed 3,433,402Patented Mar. 18, 1969 "ice by a lid tray comprising a rectangular lidpanel 9 at the edges of which there are provided four side walls 10, 11,12 and 13. The side walls 10, 11 have extensions in the form of endflaps 14. The .side walls 12, 13 have extensions at their longitudinaledges in the form of Wing flaps 15 which are articulated along foldlines 16 so as to be able to be folded over the end flaps and glued tothe side walls 12.

To form the bottom tray as well as the lid tray the side walls 2, 3 and10, 11, respectively, are erected and the end flaps are turned inwardsto a position parallel with the adjacent side walls. Thereupon, thewalls 4, 5 and 12, 13, respectively, are erected and their wings flapsare turned over the end flaps of the side walls.

One side wall 10 of the lid tray and the adjacent the wall 2 of thebottom tray are connected to each other by means of a hinge panel 17.This panel is bounded by two parallel fold lines 18, 19' and twotransverse fold lines 20 which also form hinges for the end flaps 6. Atits ends the hinge panel 17 has extensions in the form of lock flaps 21which are integral with the adjacent end flaps 6. The fold line 19 hasaligned extensions 22 which permit doubling over of the end portionformed by the end flaps 6 and the lock flap 2 From the position sh n inFIG. 2 in which the lid tray is erected the side walls 2, 3 of thebottom tray are erected and the hinge panel 17 is folded backwards anddownwards into a position flat against the side wall 2 of the bottomtray. The doubled over end portions 6, 21 comprising the end flaps andthe lock flaps are folded inwards at right angles into the positionshown in FIG. 3. Thereafter, the side walls 4, 5 of the bottom tray areerected whereupon their wing flaps 7 are folded over the doubled overend portions 6, 21 and lock these portions in the erected position ofthe box as shown in FIG. 4. The wing flaps can be retained in aconventional manner by being glued to the adjacent side walls or bycooperation with slots in the bottom panel 1.

As will be seen from FIG. 4, the lid tray 9 is articulated to the loweredge 18 of the hinge panel 17 and can be easily moved to open or closedposition by articulation about this edge.

If desired the hinged connection between the lid tray and the bottomtray may alternatively be provided at one of the end walls of the bottomtray.

In FIGS. 6 and 7 details identical with those shown in FIG. 1 aredenoted by the same reference numerals. The three blanks are practicallyidentical except for small variations. In FIG. 6 the side walls 3 and 11have wing flaps 3a and 11a, respectively, and the end flaps 6 aresomewhat tapered. Further, the lock flaps 21' have a shorter length thanthe lock flaps 21 in FIG. 1, and the fold line 22 is correspondinglyshorter to facilitate the erection. In order to facilitate the foldingof the doubled over end portion 6, 21' there is provided a slot 23 alongthe fold line 20. The slot 23 has about the same length as the width ofthe hinge panel 17 so that folding the end portion 6, 21' to theposition shown in FIG. 3 for corresponding parts 6, 21, will be easierdue to less material to be bent.

The blank shown in FIG. 7 differs from that in FIG. 6 basically as tothe bottom tray which has relatively wide side walls 2, 3', 4, 5' inrelation to the width of the side walls 10, 11, 12, 13 of the lid tray.The ends of the side walls of the bottom panel 1 are connected byintermediate end fiaps forming integral corner portions 6a, 6b which ina known manner are foldable along oblique fold lines 24 to form endportions which are secured by gluing to the inner side of the sidewalls4' and 5'.

The erection of the blanks in FIGS. 6 and 7 is effected in the same wayas described in connection with FIG. 1

except for the difierences indicated above. In all three embodiments thehinge panel 17 will be locked in its operative position when the lockflaps 21 and 21' respectively have been folded to the position shown inFIG. 3.

What I claim is:

1. A carton box erected from a single blank and comprising a bottom trayand a lid tray fitting over the side walls of the bottom tray and beinghingedly connected with one of the side walls of the bottom tray bymeans of a hinge panel lying flat against said side wall of the bottomtray and connecting the upper edge of said side wall of the bottom traywith the lower edge of the adjacent side wall of the lid tray to form ahinge at the lower edge of the side wall of the lid tray, said side wallof the bottom tray being extended at its ends with end ilaps which aresecured in a position along the adjacent side walls of the bottom tray,to lock the bottom tray in its erected position, characterized in thatthe hinge panel is extended at its ends with locking flaps integral withsaid end flaps and folded relative thereto along fold lines aligned withthe fold line between the hinge panel and the adjacent side of thebottom tray.

2. A single carton blank for erecting a box comprising a bottom tray anda lid tray provided to fit over the side walls of the bottom tray whenthe box is erected, 0p 25 posite side walls of the bottom tray beingextended with locking flaps provided to lock the side walls of the bot 4tom tray in the erected position, one of the side walls of the bottomtray and the adjacent side wall of the lid tray being interconnected bymeans of a hinge panel hingedly connected at its parallel longitudinaledges with the upper edge of the adjacent side wall of the bottom trayand with the lower edge of the adjacent side wall of the lid tray,characterized in that the hinge panel and the adjacent side wall of thebottom tray are at each end extended with a common end portion which isdivided by an extension of the fold line between the hinge flap and theadjacent side of the bottom tray.

References Cited UNITED STATES PATENTS 1,198,032 9/1916 Henze 229-44 X2,094,448 9/ 1937 Evans 22933 2,206,304 7/1940 Ringler 22944 X 2,474,5236/ 1949 Guyer 229-37 2,548,001 4/1951 Butterfill 299-33 X 2,752,0326/1956 Fish 22937 X 2,939,576 6/1960 Flicker 2'29-33 X DAVIS T.MOORHEAD, Primary Examiner.

US. Cl. X.R.

